Effects of Potassium Fertilizer Rate on Biomass Accumulation and Grain Yield of Yongyou Japonica/indica Hybrids Series

In order to investigate proper potassium application rate and its effects on growth and grain yield for Yongyou japonica/indica hybrids series, a field experiment was conducted using Yongyou 12 and Yongyou 538 with five treatments of 0, 75, 150, 225, and 300 kg ha potassium application. Results indicated that compared with check treatment (0 kg ha), potassium